国内外热处理钢轨性能分析
PROPERTY ANALYSIS OF DOMESTIC AND FOREIGN HEAT-TREATED STEEL RAILS
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摘要: 主要介绍了国内外几个主要厂家生产的全长热处理钢轨的实物性能。对国内外几种全长热处理钢轨的实物性能检验分析表明,我国采钢PD3含钒微合金热处理钢轨的综合机械性能最好;攀钢PD2碳素热处理钢轨综合性能指标不亚于国外同类热处理钢轨;日本DHH铬合金在线热处理钢轨的硬度、强度与离线碳素热处理钢轨相当,但韧性略低。Abstract: The present paper mainly introduced the properties of full-length heat-treated steel rails produced by some major companies at home and abroad. The inspection analysis to the practical properties of some full-length heat-treated steel rails have proved that V-containing micro-alloyed heat-treated rail PD3 made by Panzhihua Iron & Steel Corp. ranks first in the comparison of comprehensive mechanical property; the indexes of comprehensive properties of plain carbon heattreated rail PD2 also produced by Panzhihua Iron & Steel Corp. is by no means inferior.to the foreign counterpart,the hardness and strength of Japan-made Cr-alloyed rail DHH with on-line heat treatment are equivalent to the off-line heat-treated carbon rail,but the toughness is slightly lower.
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Key words:
- steel rail /
- microalloying /
- heat treatment /
- property
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